Cowpea (Vigna unguiculata) is an important staple in Burkina Faso as well as many other countries in West Africa. Among the major cowpea pests affecting the crop are the legume pod borer (Maruca vitrata), flower thrips (Megalurothrips sjostedti), bruchids (Callosobruchus maculatus), and...

Six Eurasian species of Carduus thistles (Compositae: Cynareael are troublesome weeds in North America. They are attacked by about 340 species of phytophagous insects, including 71 that are oligophagous on Cynareae. Of these Eurasian insects, 39 were extensively tested for host specificity, and...

The braconid larval parasitoid Cotesia flavipes Cameron was introduced from Asia into East and Southern African region starting in 1993 to control the invasive exotic maize stemborer Chilo partellus (Swinhoe) (Lepidoptera: Crambidae). A quasi-experiment was constructed using farmers that applied...

This paper was submitted on the first national congress of Sustainable Agriculture: Today and future life towards climate change, 25-26 August 2011,UNA Nicaragua.

This paper examines the spatial externalities of conventional and organic pest control methods to determine if, and how, the two types affect each other. These interactions make the problem more complicated than the usual analysis of a single externality. The numerical simulation model includes...

An application of ethyl parathion to flowering soybeans reduced populations of predatory arthropods by 66 percent 6 days posttreatment. Egg and larval parasites of the green cloverworm, Plathypena scabra (F.), the most abundant caterpillar species, also were reduced. The green cloverworm...